- Company number
- 12051396
- Incorporated
- 14 Jun 20197 years trading
- Registered office
- 20 Northcroft, Slough, SL2 1HS
- Nature of business
- Roofing activities
A1 Roofing London Ltd is a 7-year-old private limited company registered in Slough, company number 12051396, one of 47 roofing companies in Slough. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £470 (+68.4%) on the year before, to £1,157.
- Net assets rose in 3 of 5 year-on-year comparisons on record.
- Current assets of £14K against £34K owed within a year: 0.4 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 6 years, 2020 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Apr 2025 | £1,157 | £14K | £34K | 2 | |
| 30 Apr 2024 | £687 | £9,461 | £19K | 2 | |
| 30 Apr 2023 | £246 | £13K | £23K | 2 | |
| 30 Apr 2022 | £5,305 | £17K | £21K | 2 | |
| 30 Apr 2021 | £308 | £6,762 | £7,109 | 2 | |
| 30 Jun 2020 | £654 | £17K | £17K | 0 |
Where A1 Roofing London Ltd is registered
The registered office is in Slough (SL2), in the Slough local authority area, South East. Show SL2 1HS on a map.
Other trade companies in SL2
- Selmani&Aj Developments LimitedBuilders
- SMKD LimitedMotor traders
- Sloughcleanings LtdCleaning companies
- Neal LtdBuilders
- J Nomah LtdBuilders
- Eton Motor Group LtdMotor traders
- All Perfect Services LtdBuilders
- Datchet Car Body Shop LtdMechanics and garages
What happens if A1 Roofing London Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 12051396
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 June 2019 (7 years ago)
- Registered office
- 20 Northcroft, Slough, SL2 1HS
- Nature of business
- Roofing activities (SIC 43910)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 13 June 2026
Filing notes for roofing companies
Roofing companies commonly work under CIS and run vans and access equipment, so CIS deductions and capital allowances are the two things to get right.
Similar companies in Slough
Other active roofing companies registered in Slough.
- Armstrong Roofing & Building Limited2026
- Atlantis Roofing & UPVC Specialists Ltd2024
- Aujla Roofing Ltd2026
- BS Roofing Ltd2026
- Bso Roofing Ltd2024
- Byrne Roofing Services Ltd2023
- Check & Fix Roofing Ltd2025
- Coles Roofing Limited2013
All roofing companies in Slough · All trades in Slough · Roofers across the UK
Frequently asked questions
When are A1 Roofing London Ltd's accounts due?
A1 Roofing London Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is A1 Roofing London Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is A1 Roofing London Ltd still trading?
A1 Roofing London Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does A1 Roofing London Ltd do?
A1 Roofing London Ltd is registered under Roofing activities (SIC 43910).
How old is A1 Roofing London Ltd?
A1 Roofing London Ltd was incorporated on 14 June 2019, 7 years ago.
What is the penalty if A1 Roofing London Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View A1 Roofing London Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.